EVGA SuperNOVA 750W G3 Power Supply Review

Final Thoughts and Conclusions

The G3 power supply lived up to EVGA’s claim of smaller size and big performance. The overall test results for the Supernova 750W G3 power supply were excellent. Voltage regulation and AC ripple suppression are some of the best we have seen to date going from a combined output of 75W up to 750W. The maximum AC ripple and noise barely went over 10 mV p-p on the major rails, which is again outstanding. And the power supply features an excellent assortment of modular cables and delivers great efficiency, easily meeting the 80Plus Gold criteria.

The 750W G3 PSU incorporates EVGA’s ECO Thermal Control System, which allows the power supply to operate in silent, fan-less mode at low to mid power levels. The warranty period is 10 years for the 750W, 850W and 1000W models and 7-years for the 550W and 650W units. And don’t forget the chassis is only 150mm (5.9”) deep. We find ourselves struggling to find anything to complain about, however I would like to see dedicated cables for all six PCI-E connectors and some folk folks may not like the slight added bulk of the in-cable filter caps (I didn't find them to be a problem).

"Here are a few pictures showing the layout and components inside the EVGA Supernova 750W G3 power supply. The Supernova G3 Series is built by Super-Flower and is based on a second generation Leadex platform."

Hi, I asked in the office chat and unfortunately the answer is no. The modular connectors are not standardized between manufacturers or even between PSUs from the same manufactures (sometimes you can swap them within the same line but not always).

Question: how well does this compare to the Seasonic Focus Plus series (SSR-750FX) in your opinion? The F+ kindasorta won by a slim margin in JohnnyGuru's testing, but their rating system is a little... eccentric.

Obviously they're both awesome units but if you had to choose...

I've been a SS loyalist and pricing on the F+ series is very competitive, but there was some concern with the F+ units' small fan resulting in annoying noise.

Another question: what's the benefit of a fully modular PSU? Do they expect people to run their PSUs without the ATX12v cable? Is it just for easy-ish replacement if you happen to damage a cable? Would be a lot more valuable IMHO if they bundled shorter and longer cables for different case/mobo combos.

Thanks, its always good to know that readers find our reviews helpful.

First question: Yes, both the EVGA 750W G3 and the Seasonic 650W Focus+ Gold PSUs proved to be excellent. Performance wise they are very close, both with very good voltage regulation, AC ripple suppression and efficiency (the 750W G3 had slightly better AC ripple suppression). The EVGA G3 also uses a slightly larger fan (128mm vs the Seasonic F+ 120mm) but they both are relatively quiet through mid-power range and both have FDB. And they are both backed by a 10-year warranty. So your final purchasing decision may come down to price - which one has the lower cost when you want to buy one (at this moment the Seasonic 750W F+ is about $20 less than the EVGA 750W G3).

Second question: I personally prefer a semi-modular PSU with a fixed 24-pin, 4+4 ATX CPU, and a pair of PCI-E cable/connectors. Its not like these are optional. Being fully modular adds more connection points (potential for added resistance/slight voltage drop) and a little bulk to the front of the PSU. I suspect manufacturers are going fully modular to lower production costs by eliminating the extra labor required to hand solder fixed leads.